This is a two-part paper-based in-class activity for a class of any size that deals with the
concept of growth curves. Given a set of data, students should be able to plot a growth curve and
calculate the doubling time and growth rate. Students then predict how the growth rate will be
affected by changing nutrients, oxygen, and physical conditions (such as pH, temperature, and salt).
Students will demonstrate that they have successfully learned the exercise objectives when they can
plot the growth curve, calculate the growth rate, and predict the changes in the growth curve given
new information. The understanding of the growth curve concept may be assessed by exam
questions.